22002110212021 has 4 divisors (see below), whose sum is σ = 22002168899500. Its totient is φ = 22002051524544.

The previous prime is 22002110212013. The next prime is 22002110212051. The reversal of 22002110212021 is 12021201120022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13364771277796 + 8637338934225 = 3655786^2 + 2938935^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002110212021 - 2³ = 22002110212013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002110211986 and 22002110212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002110212051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28777746 + ... + 29532403.

It is an arithmetic number, because the mean of its divisors is an integer number (5500542224875).

Almost surely, 2^{22002110212021} is an apocalyptic number.

It is an amenable number.

22002110212021 is a deficient number, since it is larger than the sum of its proper divisors (58687479).

22002110212021 is an equidigital number, since it uses as much as digits as its factorization.

22002110212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58687478.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22002110212021 its reverse (12021201120022), we get a palindrome (34023311332043).

The spelling of 22002110212021 in words is "twenty-two trillion, two billion, one hundred ten million, two hundred twelve thousand, twenty-one".